Google is your friend. Your problem here is that you have a Crossfire with an automatic transmission.
I'd sell the damn thing. In fact, see my sigline - I DID sell my automatic (but not cause of this problem, thought I was losing my job .... ).

ANYWAY, best way to find the answer is to google this:

"Mercedes P0600, P0720"

You will get a lot of responses, here, I found the most entertaining:

Looks like another "Conductor Plate" issue to me.






Edited thread title - be SPECIFIC and you get help faster !